Diatom (2 of 3) (IMAGE) Rice University Caption The remains of a pinnularia borealis diatom found in ice from the Quelccaya Summit Dome Glacier. Credit Bruce Brinson/Rice University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.